Wear my underwear with some cum(?) on my hands.. Pregnancy?

im sure ur not pregnant for these reasons:

1- precum is not the fluid which makes u pregnant

2- touching ur vagina with cum also doesnt make u pregnant

3- ur symptoms of headache ,,dizzness... is that ur being worried and scared about ur situation

4- having ur period after 4-5 dayz of that time clearly show ur still not pregnant

5- finally ur still a virgin [in this case,,dont know if u have done sex before] ,,,so that cum cant pass through ur vagina

I know two girls that are pregnant by precum.

the word "precum" means the fluids that are secreted to provide lubrication so that when you cum, your sperm finds good medium to pass through and get their nourishment from in the females tract... so the case where you are saying that two girls you know got pregnant is surely cause of cum and not precum

You are correct to be careful, but by now I guess you already know the answer. For others -- yes, you could possibly have gotten pregnant. And not only if your name is Mary. Any contact with an erect penis around the vulva lips, hymen (covering of the entrance to the vagina) or entry into the vagina could cause pregnancy. Pre-cum or not, the could be sperm present, and it only takes one. The important thing is whether or not the female is in the fertile period, which is roughly a week before and a week after her period. I would search on the internet for "rhythm birth control" method to determine times of infertility. In matters none whether this is your first sexual experience or not, or whether your hymen was broken beforehand or not. Since your period had finished just a couple days before your period began, it would have been unlikely to have gotten pregnant. Yes, though, a broken condom can have unforeseen consequences when in the time between periods.

In addition to the above Standard Days Method is one 'natural' method of contraception. It is a kind of calendar method to keep track of your cycle. You may find it simpler to use than other methods. You can only use it if: You have regular cycles, Your cycle is never shorter than 26 days, Your cycle is never longer than 32 days, and You will not have unprotected vaginal intercourse from day 8 through day 19 of each cycle, counting from day one of bleeding from your regular cycle. Certain things may make this method less than perfect, though, such as the use of hormonal contraception (including the 'day after' pill), IUDs, breastfeeding, or a recent pregnancy. Some use special strings of beads for this method, called CycleBeads to help keep track of their cycles. There are 33 colored beads with a moveable rubber ring on the string. The first bead is black with a white arrow, the the next one is red, the next six are brown, the next 12 white, and the last 13 brown. Each one, except the black one, represents a day. On the first day of your period, day one, you put the ring on the red bead, you move the ring from one bead to another each day — in the direction of the arrow. Brown beads stand for safe days when unprotected vaginal intercourse when the ring is on one of them is safe from pregnancy. White beads stand for unsafe days, when you should not have vaginal intercourse unprotected, at least vaginally.

precum can contain sperm